Zenon Friedwald was born in 1906.
Zenon Friedwald died in 1976.
Will Friedwald was born in 1961.
Zenon Kossak was born in 1907.
Zenon Pylyshyn was born in 1937.
Zenon Bortkevich was born in 1937.
Zenon Świętosławski was born in 1811.
Zenon Wiśniewski was born in 1959.
Zenon Przesmycki was born in 1861.
Zenon Waraszkiewicz was born in 1909.
Zenon Szordykowski was born in 1947.
Zenon Różycki was born in 1913.
Zenon Stefaniuk was born in 1930.